Adwords provides an imperfect measure. If you are geo targetting, the amount you need to pay for your Adwords ads to show up may be considerably lower than if you are targetting the world. It range between five cents and $10 per click and more. There may also be legacy Adwords campaigns which kick in at very low rate levels once the higher paying campaigns have hit their monthly, user set limits. Some people also believe that Google is capable of ensuring its best advertisers do not appear on poor performing sites -- where the measure is not just clicks but purchases. The net result, is there is no way to predict anything about anything with AdSense. Daily revenues can bounce in a range where the best day is 10 to 15 times better than the worst day; and average per click revenues can easily be two to three times better on good days than bad days. Greater if you consider one cent per click days. As others have continually stressed -- while revenue potential is always a consideration in developing a site -- it takes good content to generate and sustain the kind of traffic needed to take full advantage of your site's potential as an advertising medium.
If you have an adwords account you can log in & check out the "Traffic Estimator" tool, that'll give you an idea on what people pay for certain keywords. Althought I've not really ever found it to be accurate because it shows the "Maximum" the advertiser is willing to pay not what they are actually paying.....
try this.. http://resultsgenerator.com/ but it only give you an idea.. not the actual rate! furthermore.. it's Yahoo's
Well I can suggest you a method to roughly estimate the cpc on one of your pages.Just visit a cyber cafe and click only on one ad.Then check your adsense account.You will get a rough picture of cost for one click on your page!!